Zero-delay structure for sub-band echo cancellation

Details Zero-delay structure for sub-band echo cancellation Zero-delay structure for sub-band echo cancellation

H - Electricity

04

B

H04B 3/23 (2006.01) H04M 9/08 (2006.01)

Patent

CA 2285137

A zero-delay structure to be used in sub-band echo cancellation systems. In telecommunications, a delay is usually introduced in sub-band decomposition and/or sub-band reconstruction. This invention will help remove this. This structure not only removes the delay but does not sacrifice the performance of the echo canceller. It is to be used in combination with any sub-band-based echo canceller or wavelet echo canceller.

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